阅读说明：本技术 数字无线电通信信号通用解调解析装置及其方法 (Universal demodulation and analysis device for digital radio communication signal and method thereof ) 是由 钟声 占文生 周经文 高洁 于 2020-04-02 设计创作，主要内容包括：本发明公开了一种数字无线电通信信号通用解调解析装置及其方法。本发明中：终端设备与为1.5-30MHz射频接收与数字处理组件和30-3800MHz射频接收与数字处理组件连接；所述第一处理组件和第二处理组件均分别与一天线连接。本发明通过设置1.5-30MHz射频接收与数字处理组件和30-3800MHz射频接收与数字处理组件与终端设备配合；再通过对数字无线电通信信号通用解调解析方法进行优化；对射频宽带接收时通带内存在的多个无线电信号可以进行有效分离和分析测量,能够自动检测各个体信号的调制类型、波特率、信号中频、载波数量、频偏与载波间隔等特征参数；实现对188种数字通信信号进行数字解调、编码分析、数据帧结构分析、协议解析的通用功能。(The invention discloses a general demodulation and analysis device and a general demodulation and analysis method for digital radio communication signals. In the invention: the terminal equipment is connected with a 1.5-30MHz radio frequency receiving and digital processing component and a 30-3800MHz radio frequency receiving and digital processing component; the first processing assembly and the second processing assembly are respectively connected with an antenna. The invention sets 1.5-30MHz radio frequency receiving and digital processing component and 30-3800MHz radio frequency receiving and digital processing component to match with terminal equipment; optimizing the general demodulation analysis method of the digital radio communication signals; the radio signals existing in a receiving band when the radio frequency bandwidth is received can be effectively separated and analyzed and measured, and characteristic parameters such as modulation type, baud rate, signal intermediate frequency, carrier number, frequency offset, carrier interval and the like of each individual signal can be automatically detected; the universal functions of digital demodulation, coding analysis, data frame structure analysis and protocol analysis of 188 digital communication signals are realized.)

1. A general demodulation and analysis device for digital radio communication signals is characterized by comprising terminal equipment; the terminal equipment is respectively connected with a first processing component and a second processing component, and the first processing component and the second processing component are respectively connected with an antenna;

the first processing component is a 1.5-30MHz radio frequency receiving and digital processing component, and the second processing component is a 30-3800MHz radio frequency receiving and digital processing component;

the antenna is a short-wave and ultrashort-wave omnidirectional or directional broadband receiving antenna, and the antenna determines the covered working frequency range according to the working frequency range of the connected processing component.

2. The apparatus and method for universal demodulation and resolution of digital radio communication signals according to claim 1, wherein the terminal device is a high performance computer platform or server embedded with software for universal demodulation and resolution of digital communication signals.

3. The method for universal demodulation resolution of digital radio communication signals according to claim 1, comprising the steps of:

the method comprises the following steps: the terminal equipment receives a corresponding equipment driving program selected by the digital conversion processing component aiming at the selected broadband radio frequency;

step two: selecting radio frequency receiving bandwidth and I/Q data transmission rate parameters according to the device driver selected in the step one;

step three: converting the I/Q data stream collected in the step two into a time data stream by adopting a general time-frequency conversion algorithm;

step four: signal layer characteristic parameters such as signal bandwidth, modulation style and modulation parameters, baud rate, carrier number, frequency offset and carrier interval of multi-target signal separation and individual target signals in a radio frequency receiving passband are automatically extracted;

step five: converting the I/Q data stream into 0/1 bit stream by using a general digital demodulator;

step six: analyzing a bit stream analyzer and a corresponding encoding mode thereof, encoding parameters, a data frame structure and a communication protocol type thereof;

step seven: the terminal equipment selects a corresponding communication protocol type to automatically analyze the information content according to the analysis result of the step six;

step eight: judging whether to continue working or not, if so, re-entering the step four, and if so, entering the step nine;

step nine: and completing the analysis work.

Technical Field

The invention belongs to the technical field of radio communication, and particularly relates to a general demodulation and analysis device and method for digital radio communication signals.

Background

The safety of the network electromagnetic space is an important guarantee for the information safety of the modern information society. The development of modern digital radio communication (network) technology has been developed from single-mode digital modulation such as simple digital frequency shift and digital phase shift to multi-mode mixed digital modulation, and the coding mode, frame structure and protocol format of transmission code stream are more and more complex and diverse, which all bring more and more serious challenges to the effective monitoring of information security of wireless network.

It is known that digital radio communication signals applied in global scale and universalization include 107 types of short-wave digital radio communication signals, 44 types of ultrashort-wave digital radio communication signals, 23 types of satellite digital communication signals and 14 types of fax and MODEM signals, and new reconnaissance analysis technical means need to be developed for effectively monitoring the information security of the digital radio communication signals.

The traditional radio monitoring or reconnaissance analysis technology is mainly carried out aiming at signal layers of characteristic parameters such as frequency spectrum structure, signal bandwidth, modulation pattern, code stream rate and the like of a radio signal, and a technical means for deeply analyzing information layers such as a recoding mode, a data frame structure, a protocol format and the like is lacked.

At present, global anti-terrorism situation is very severe, and the severe situation has existed for a long time, terrorists are increasingly rampant in using various wireless communication network systems to implement criminal activities, so that a technical means capable of realizing comprehensive and effective monitoring of various wireless communication (network) signals in a signal layer and an information layer in a full frequency band within a certain region range needs to be developed.

Disclosure of Invention

The invention aims to provide a general demodulation and analysis device and a general demodulation and analysis method for digital radio communication signals, wherein a 1.5-30MHz radio frequency receiving and digital processing component and a 30-3800MHz radio frequency receiving and digital processing component are arranged to be matched with terminal equipment; optimizing the general demodulation analysis method of the digital radio communication signals; the radio signals existing in a receiving band when the radio frequency bandwidth is received can be effectively separated and analyzed and measured, and characteristic parameters such as modulation type, baud rate, signal intermediate frequency, carrier number, frequency offset, carrier interval and the like of each individual signal can be automatically detected; the universal functions of carrying out digital demodulation, coding analysis, data frame structure analysis and protocol analysis on 188 digital communication signals, such as 107 international short-wave digital radio communication signals, 44 ultra-short-wave digital radio communication signals, 23 satellite digital communication signals, 14 fax and MODEM signals and the like, are realized.

In order to solve the technical problems, the invention is realized by the following technical scheme:

the invention relates to a general demodulation and analysis device for digital radio communication signals, which comprises terminal equipment; the terminal equipment is respectively connected with a first processing assembly and a second processing assembly, and the first processing assembly and the second processing assembly are respectively connected with an antenna;

the first processing component is a 1.5-30MHz radio frequency receiving and digital processing component, and the second processing component is a 30-3800MHz radio frequency receiving and digital processing component;

the antenna is a short-wave and ultrashort-wave omnidirectional or directional broadband receiving antenna, and the antenna determines the covered working frequency range according to the working frequency range of the connected processing component.

Preferably, the terminal device is a high-performance computer platform or server embedded with general demodulation and analysis algorithm software for digital communication signals.

The general demodulation analysis method for the digital radio communication signals comprises the following steps:

the method comprises the following steps: the terminal equipment receives a corresponding equipment driving program selected by the digital conversion processing component aiming at the selected broadband radio frequency;

step two: selecting radio frequency receiving bandwidth and I/Q data transmission rate parameters according to the device driver selected in the step one;

step three: converting the I/Q data stream collected in the step two into a time data stream by adopting a general time-frequency conversion algorithm;

step four: signal layer characteristic parameters such as signal bandwidth, modulation style and modulation parameters, baud rate, carrier number, frequency offset and carrier interval of multi-target signal separation and individual target signals in a radio frequency receiving passband are automatically extracted;

step five: converting the I/Q data stream into 0/1 bit stream by using a general digital demodulator;

step six: analyzing a bit stream analyzer and a corresponding encoding mode thereof, encoding parameters, a data frame structure and a communication protocol type thereof;

step seven: the terminal equipment selects a corresponding communication protocol type to automatically analyze the information content according to the analysis result of the step six;

step eight: judging whether to continue working or not, if so, re-entering the step four, and if so, entering the step nine;

step nine: and completing the analysis work.

The invention has the following beneficial effects:

the invention sets 1.5-30MHz radio frequency receiving and digital processing component and 30-3800MHz radio frequency receiving and digital processing component to match with terminal equipment; optimizing the general demodulation analysis method of the digital radio communication signals; the radio signals existing in a receiving band when the radio frequency bandwidth is received can be effectively separated and analyzed and measured, and characteristic parameters such as modulation type, baud rate, signal intermediate frequency, carrier number, frequency offset, carrier interval and the like of each individual signal can be automatically detected; the universal functions of carrying out digital demodulation, coding analysis, data frame structure analysis and protocol analysis on 188 digital communication signals, such as 107 international short-wave digital radio communication signals, 44 ultra-short-wave digital radio communication signals, 23 satellite digital communication signals, 14 fax and MODEM signals and the like, are realized.

Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic diagram of a general demodulation and analysis apparatus for digital radio communication signals according to the present invention

Fig. 2 is a flow chart of a general demodulation parsing method for digital radio communication signals.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, the present invention is a general demodulation and analysis apparatus for digital radio communication signals, including a terminal device; the terminal equipment is a high-performance computer platform or a server embedded with general demodulation analysis algorithm software for digital communication signals; a high-performance computer or a server platform requires to configure a 16GB memory, a USB3.0 high-speed data interface, a gigabit network port, a multi-core CPU with a dominant frequency of 3.0GHz or more, a solid-state electronic disk and the like, on one hand, the computer platform is ensured to input a high-speed I/Q data stream acquired by a short-wave and ultrashort-wave radio frequency receiving and digital conversion processing component in real time through a high-speed bus, and simultaneously, real-time effective demodulation and analysis of 188 digital communication signals are realized through corresponding embedded general algorithm software (general algorithm software for analyzing and analyzing information layers such as general digital demodulation and corresponding coding mode, data frame structure, protocol format and the like);

the terminal equipment performs time-frequency conversion on an I/Q data stream (digital waveform) output by the short-wave/ultra-short-wave radio frequency receiving and digital conversion processing component, analyzes and extracts signal layer characteristic parameters such as signal bandwidth, modulation style and modulation parameters, baud rate, carrier quantity, frequency deviation and carrier interval, analyzes and extracts digital demodulation and 0/1 code stream (or bit stream), analyzes a corresponding coding mode and coding parameters, analyzes a data frame structure and a communication protocol type thereof, analyzes information content and other algorithm software, and efficiently realizes the high-performance CPU hardware resource.

The terminal equipment is respectively connected with the first processing assembly and the second processing assembly, and the first processing assembly and the second processing assembly are respectively connected with an antenna; the first processing component is a 1.5-30MHz radio frequency receiving and digital processing component, and the second processing component is a 30-3800MHz radio frequency receiving and digital processing component; the first processing component and the second processing component have lower noise coefficient (2 dB-3 dB) and superior broadband radio frequency receiving characteristics (characteristics such as second order/third order node value, instantaneous bandwidth, out-of-band rejection, dynamic range, gain control range and the like) and digital conversion processing characteristics (ADC bit number, I/Q data rate, digital bandwidth and the like);

the frequency range of the short wave signals is 1.5-30MHz, the bandwidth of a single short wave signal is usually within 6KHz (mostly within 3 KHz), but the short wave radio frequency receiving channel used for reconnaissance receiving usually adopts the receiving bandwidth of 100KHz (the minimum is also 10KHz), in addition, the short wave can realize long-distance transmission (hundreds of kilometers or even thousands of kilometers) through an ionosphere, only the data transmission rate is low, the short wave radio frequency receiving channel is a main technical means for ensuring minimum long-distance communication information transmission, and the international current common use is 107 digital communication signal formats. However, the ionosphere is a parameter associated channel, so that the ionosphere is used as a third party to realize reconnaissance analysis, and has higher performance index requirements on the receiving characteristics of a short-wave radio frequency receiving channel compared with an ultrashort-wave radio frequency receiving channel. The working frequency range of the ultrashort wave signal is usually 30-3000 MHz (VHF/UHF), the bandwidth of a single ultrashort wave signal is usually within 25KHz, the bandwidth is also within 200KHz, but the ultrashort wave radio frequency receiving channel used for reconnaissance receiving usually adopts the receiving bandwidth of 20MHz (at least, 200 KHz). Therefore, a short-wave 1.5-30MHz radio frequency receiving channel and an ultra-short-wave 30-3000 MHz radio frequency receiving channel (a radio frequency receiving channel with a frequency range covering 30-3800MHz and a radio frequency receiving channel with a frequency range covering 30-6000 MHz are selected) are required to be separated on a hardware composition platform.

The terminal equipment converts the zero intermediate frequency output signal of the radio frequency receiving channel into continuous I/Q data stream (digital waveform), thereby being convenient for realizing digital demodulation on a software algorithm, and converts the I/Q data stream (digital waveform) of various modulation patterns and coding modes into 0/1 code stream (bit stream). The short wave and ultrashort wave radio frequency receiving and digital conversion processing component supports the whole device to effectively convert various spatial types of digital radio communication signals (spatial electromagnetic wave signals) into zero intermediate frequency I/Q data streams (digital waveforms) almost without distortion, and lays a foundation for accurately demodulating the I/Q data streams into 0/1 code streams (bit streams) through a high-performance computer platform.

The antenna is a short-wave and ultrashort-wave omnidirectional or directional broadband receiving antenna, and the antenna determines a covered working frequency range according to a working frequency range of a connected processing component; the receiving antenna can be arranged on the top of the vehicle carrier according to the requirements of the working environment and can also be supported by the lifting rod.

As shown in fig. 2, the general demodulation and analysis method for digital radio communication signals includes the following steps:

the method comprises the following steps: the terminal equipment receives a corresponding equipment driving program selected by the digital conversion processing component aiming at the selected broadband radio frequency;

step two: selecting radio frequency receiving bandwidth and I/Q data transmission rate parameters according to the device driver selected in the step one;

step three: converting the I/Q data stream collected in the step two into a time data stream by adopting a general time-frequency conversion algorithm;

step four: signal layer characteristic parameters such as signal bandwidth, modulation style and modulation parameters, baud rate, carrier number, frequency offset and carrier interval of multi-target signal separation and individual target signals in a radio frequency receiving passband are automatically extracted;

step five: converting the I/Q data stream into 0/1 bit stream by using a general digital demodulator;

step six: analyzing a bit stream analyzer and a corresponding encoding mode thereof, encoding parameters, a data frame structure and a communication protocol type thereof;

step seven: the terminal equipment selects a corresponding communication protocol type to automatically analyze the information content according to the analysis result of the step six;

step eight: judging whether to continue working or not, if so, re-entering the step four, and if so, entering the step nine;

step nine: and completing the analysis work.